AWS Certified SysOps Administrator SOA-C01 – Question231

A user has configured ELB with Auto Scaling. The user suspended the Auto Scaling terminate process only for a while. What will happen to the availability zone rebalancing process (AZRebalance. during this period?

A. Auto Scaling will not launch or terminate any instances
B. Auto Scaling will allow the instances to grow more than the maximum size
C. Auto Scaling will keep launching instances till the maximum instance size
D. It is not possible to suspend the terminate process while keeping the launch active

Correct Answer: B

Explanation:

Explanation: Auto Scaling performs various processes, such as Launch, Terminate, Availability Zone Rebalance (AZRebalance) etc. The AZRebalance process type seeks to maintain a balanced number of instances across Availability Zones within a region. If the user suspends the Terminate process, the AZRebalance process can cause the Auto Scaling group to grow up to ten percent larger than the maximum size. This is because Auto Scaling allows groups to temporarily grow larger than the maximum size during rebalancing activities. If Auto Scaling cannot terminate instances, the Auto Scaling group could remain up to ten percent larger than the maximum size until the user resumes the Terminate process type.